Sticky menu modifications

toonetcreation

Hello,

With template ja_mixstore, what do you advice to :

1) make main menu/header background transparent when page is on top and when I scroll down?
2) move menu/header over the slide the masthead/home page slideshow, instead of having menu/header on top and masthead below ?

See my website link with URL 1 and en example with URL 2 on ticket details.